Thats a really original idea. How long will it be before every idiot adds the KHAN sound effect and puts William Shatner's face on it? How long before somebody loops in "n*gg* stole the orchestra" or something? The idea is gonna be killed.

You don't need vinyl, you can d/l acapellas from any P2P program. I found one on Soulseek so I could make my own Snoop site...supersnoop.ytmnd.com
Just type in "acapella" and you can find all kinds of vocals